I will already lose all my military and all my hard-enhanced holdings as Marcus, all of which has been spent to help the town. My current abilities of being a very superb healer (99% of which is just mechanical skills available to any player, 1% is a magic item I wouldn't mind if disappeared) would really put the nail in the coffin, as it gives me the tremendous enjoyment of the fruition of years of hard work enabling me to feel powerfully helpful- something I rarely enjoy as a muggle.
Now, Marcus being transported extremely far from Haven, being forced to work from scratch on a noble and good reputation in a place that knows him not, especially in the face of being separated -possibly even forever- from his beloved wife and child....that alone would be a seed for immense personal storytelling (oh, my dear god, could the well-known goody-two-shoes, in the face of all his abilities and vows to save innocent life, be driven towards the Dark Side for awhile out of grief?!

A bit off-topic, but as for sitting around massing personal wealth and power- it's the same old argument people posed about gaining XP from playing both WH and FH with the same character (the counter argument being it was twice the risk) My god, I have volunteered for the risk of permanent death TWICE already in the what-6 (?) real-world years playing as Marcus- once with about 7 other pretty high-level characters, finally attaining my Master Path Specialty for the latter part of this season with:
-Maybe 12-16 (old system) levels from making props for both games.
-taking twice the risks of playing both Chapters, until by my own roleplaying I forced myself to stop playing Marcus at WH.
-Not one single NPC experience point.
-Never once paying real-world cash for the double dip at the start of the event.
That's really a horrible plan at amassing personal power, especially if that personal power is immediately spent in-game for other character's benefits.
If magic items are a perceived problem of attained power- fine. Transferring to a new setting strips us of them, and our wits alone must now save us. Half of Marcus' magic items are only there to keep him safe from in-game assassination attempts and shenanigans by terrorist characters; another one keeps other characters alive and does nothing for me, and one whose highest value to me is because it started out as a perfectly mundane item that is immensely and entirely back-story (it even has it's own!) tied to why Marcus is even a "hero" and not a NPC peasant, only after years gaining an ability requiring hero points to empower that has been replicated by at least one other player in another fashion in an easier way. I only care about it in the first aspect, as it has attained the "ever-present eyepatch/hairstyle/costume" personal status, and going without it - not to mention willingly giving it to other characters for safekeeping as a sign of the highest trust- has actually driven personal stories along.
I actually have loved Brennandale as a setting, as it really showed signs of being a setting unique to itself that has not even really been explored by most players. Some of us have even spent more than one Research request solely on the purposes of fleshing the area out as a unique place. Hell, the name alone has it's own in-game backstory created by players reacting to a situation, rather than being told it by NPC's!
I think most of this has been such an impact to me as I never even heard a rumor of it until one week before what could be my preeminent and most well-crafted character's final event ever depending on a popular vote. Glad I haven't made any big purchases for garb and equipment.